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This list of Best Free Software for Linux now includes 151 apps in various categories. Among a plethora of freeware products, we have selected some gems in each category and added them to the list with clear and brief descriptions of each app.

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by Panzer on 26. February 2013 - 8:48  (105762)

CodeBlocks is a free C++ IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable:
http://www.codeblocks.org/

by Panzer on 28. February 2013 - 9:29  (105814)

SMath Studio - mathematical program with "paper"-like interface and numerous computing features (now with integrated mathematical reference book):
http://en.smath.info/forum/yaf_postst1447_SMath-Studio-0-95-4594--30-Jul...

by Panzer on 6. March 2013 - 9:18  (105985)

"... Tomahawk is a music player that fundamentally changes the way music is consumed and shared. It decouples the name of the song from the source it was shared from - and fulfills the request using all of your available sources ...":
http://www.tomahawk-player.org/

by Panzer on 9. March 2013 - 10:23  (106075)
by Panzer on 12. March 2013 - 9:21  (106157)

OCHD (1/43 on Virus Total):

Features:

-Download acceleration (AKA multi-part) whenever possible (up to 40 connections per file).
-HTTP links support (direct download).
-Resume download support whenever possible.
-Global download speed limit.
-Slot limit (up to 20 slots) for simultaneous downloads.
-Automatic retry on download fail.
-File list Drag&Drop (Ctrl+Click, Shift+Click or Shift+up and down arrow keys)
-Lightweight: you can add thousands of links.
-HTTP Proxy support.
-History.
-Automatic Extract/Uncompress files.
-IP Renewer.
-Automatic system shutdown.
-Clipboard monitor.

http://ochdownloader.com/

by Panzer on 12. March 2013 - 9:35  (106159)

Notepadqq - A Notepad++ clone for Linux:
http://sourceforge.net/projects/notepadqq/

by Jojo Yee on 12. March 2013 - 13:21  (106167)

It's still a pre-alpha at version 0.13.0. See also this note by the developer.

by Panzer on 18. March 2013 - 9:42  (106346)

dtrx is a tool for that takes all the hassle out of extracting archives:

Features:

* Handles many archive types: You only need to remember one simple command to extract tar, zip, cpio, deb, rpm, gem, 7z, cab, lzh, rar, gz, bz2, lzma, xz, and many kinds of exe files, including Microsoft Cabinet archives, InstallShield archives, and self-extracting zip files. If they have any extra compression, like tar.bz2 files, dtrx will take care of that for you, too.
* Keeps everything organized: dtrx will make sure that archives are extracted into their own dedicated directories.
* Sane permissions: dtrx makes sure you can read and write all the files you just extracted, while leaving the rest of the permissions intact.
* Recursive extraction: dtrx can find archives inside the archive and extract those too.

http://brettcsmith.org/2007/dtrx/

by Panzer on 19. March 2013 - 9:40  (106380)

Octopussy - Open Source Log Management Solution:

Features:

- LDAP supported for Octopussy Users & Contacts
- Send Alerts by Email, IM(Jabber), NSCA(Nagios) & Zabbix_sender
- Export Reports by Email, FTP & SCP
- Create Map to show your architecture
- Input & Output Plugins for Reports
- Reports Scheduling
- 'RRDTool' to graph syslog activity
- Lot of Services already supported: Bind, Cisco Router, Cisco Switch, DenyAll Reverse Proxy, Drbd, F5 BigIP, Fortinet FW, Ironport MailServer, Linux Kernel/System, Linux IPTables, Monit, MySQL, Nagios, NetApp NetCache, Juniper Netscreen FW, Juniper Netscreen NSM, Postfix, PostgreSQL, Samhain, Snmpd, Squid, Sshd, Syslog-ng, Windows Snare Agent, Xen...
- Wizard to easily create new Message/Service for Unrecognized logs
- Online Updates for Services, Tables & Multilanguage
- Multilanguage support
- Themable Interface & Report

http://www.octopussy.pm/
http://sourceforge.net/projects/syslog-analyzer/?source=navbar

by Panzer on 23. March 2013 - 8:42  (106485)

LaTeX is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation:
http://latex-project.org/
http://latex-project.org/ftp.html

by Panzer on 25. March 2013 - 8:35  (106513)

Micropolis is one of the oldest and greatest city-building games based on the original code for SimCity.

Features:

* Unlimited playability offers hours of fun
* Eight included scenarios, each a game in itself, with an unlimited number of ways to win or lose
* Multiple Views allows you to open up any number of animated city maps and editors at once
* Micropolis features pop up "pie menus" for quickly selecting city editing tools

http://sourceforge.net/projects/micropolis.mirror/

by Panzer on 27. March 2013 - 8:52  (106573)

With SubiT, you can download subtitles to your favorite movies and serieses by just right clicking them and executing SubiT:
http://subit-app.users.sourceforge.net/

by Panzer on 28. March 2013 - 10:31  (106596)

"... AstroMenace is a brilliant 3d scroll-shooter allowing you to feel the adrenalin rush of a fierce space battle against relentless swarms of alien invaders. Immerse into a decisive battle against tons of cunning foes, face the terrifying bosses and protect your homeland throughout 15 diverse levels of the game. The hardcore gameplay of AstroMenace, packed with pure non-stop action, will become a full scale test for your basic instinct of survival ...":
http://www.viewizard.com/

Blobby Volley 2:
http://sourceforge.net/projects/blobby/

by Panzer on 30. March 2013 - 8:51  (106651)

Zero Install is a decentralised cross-distribution software installation system. Other features include full support for shared libraries, sharing between users, and integration with native platform package managers:
http://0install.net/

by Panzer on 2. April 2013 - 8:24  (106739)

"... Quod Libet is a GTK+-based audio player written in Python, using the Mutagen tagging library. It's designed around the idea that you know how to organize your music better than we do. It lets you make playlists based on regular expressions (don't worry, regular searches work too). It lets you display and edit any tags you want in the file. And it lets you do this for all the file formats it supports ...":
http://code.google.com/p/quodlibet/

by Panzer on 4. April 2013 - 8:33  (106806)

The Connection Manager (ConnMan) project provides a daemon for managing internet connections within embedded devices running the Linux operating system.

ConnMan is designed to be slim and to use as few resources as possible, so it can be easily integrated. It is a fully modular system that can be extended, through plug-ins, to support all kinds of wired or wireless technologies. The plug-in approach allows for easy adaption and modification for various use cases:
http://connman.net/

by Panzer on 4. April 2013 - 9:58  (106811)

FSGamer runs games in their own X server, which can improve the speed, reduce annoying interruptions, and make switching between fullscreen games and your desktop easy and reliable (still in alpha):
http://michaelb.org/projects/fsgamer/

by Panzer on 5. April 2013 - 8:27  (106832)

Tor Browser Bundle for GNU/Linux - Everything you need to safely browse the Internet. This package requires no installation. Just extract it and run:
https://www.torproject.org/download/download-easy.html.en#linux

Instructions:
https://www.torproject.org/projects/torbrowser.html.en

by Panzer on 8. April 2013 - 8:33  (106893)
by Panzer on 8. April 2013 - 8:51  (106895)

Radio Tray is an online radio streaming player that runs on a Linux system tray. Its goal is to have the minimum interface possible, making it very straightforward to use:
http://radiotray.sourceforge.net/

Great Little Radio Player - A robust internet radio station streamer for Ubuntu and Fedora based Linux distributions. It connects to web sites offering radio streaming and lets you play radio stations directly from that locations. With Great Little Radio Player, you will have collection of 300 radio stations worldwide:
https://sites.google.com/site/glrpgreatlittleradioplayer/home

by Panzer on 8. April 2013 - 9:39  (106899)

Jitsi (formerly SIP Communicator) is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, Yahoo! and many other useful features:
https://jitsi.org/Main/HomePage

by Panzer on 10. April 2013 - 7:43  (106953)

XnViewMP is the enhanced version to XnView. It is a powerful cross-platform media browser, viewer and converter. Compatible with more than 500 formats (both 32 and 64 bit versions are available):
http://www.xnview.com/en/xnviewmp/

by Panzer on 10. April 2013 - 9:12  (106957)
by vandamme on 10. April 2013 - 13:22  (106961)

XnView is a great photo editor. Fast, easy, yet powerful.

by Panzer on 12. April 2013 - 7:53  (107014)

zuluCrypt is a front end to cryptsetup, a Linux native solution for hard drive encryption. As a GUI frontend, zuluCrypt makes it easy to use cryptsetup to manage PLAIN,LUKS as well as TRUECRYPT encrypted volumes.

Features:

- Create encrypted volumes in files and in partitions.
- Create LUKS and PLAIN encrypted volumes
- Open encrypted volumes residing in both files and partitions.
- Add keys to luks based encrypted volumes residing in both files and partitions.
- Delete keys from luks based encrypted volumes residing in both files and partitions.
- Open encrypted volumes using a passphrase, a keyfile, a combination of passphrase and keyfile, a gpg encrypted keyfile.
- Retrieve volume keys from either gnome's keyring or kde's kwallet.
- Encrypt stand alone files, a la gpg (no compression and integrity check though).
- Erase data on partitions.

http://code.google.com/p/zulucrypt/

by Panzer on 13. April 2013 - 7:34  (107042)

"... LFTP is a sophisticated ftp/http client, and a file transfer program supporting a number of network protocols. Like BASH, it has job control and uses the readline library for input. It has bookmarks, a built-in mirror command, and can transfer several files in parallel. It was designed with reliability in mind ...":
http://lftp.yar.ru/

yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams:
http://www.yworks.com/en/products_yed_about.html

by Panzer on 20. April 2013 - 6:48  (107213)

XnSketch allows you to turn your photos into cartoon or sketch images:
http://www.xnview.com/en/xnsketch/

XnRetro allows you to create stunning images with vintage or instant effect on your Desktop:
http://www.xnview.com/en/xnretro/

by Panzer on 20. April 2013 - 9:09  (107221)

"... Monitorix is a free, open source, lightweight system monitoring tool designed to monitor as many services and system resources as possible. It has been created to be used under production Linux/UNIX servers, but due to its simplicity and small size can be used on embedded devices as well ...":
http://www.monitorix.org/

by Panzer on 23. April 2013 - 8:46  (107277)
by Panzer on 23. April 2013 - 9:27  (107279)

Gobby is a free collaborative editor supporting multiple documents in one session and a multi-user chat:
http://gobby.0x539.de/trac/

Geeknote — non official command line client for Evernote:
http://www.geeknote.me/

Phatch is an user friendly, cross-platform Photo Batch Processor and Exif Renamer with a nice graphical user interface:
http://photobatch.wikidot.com/

Ocenaudio is a cross-platform, easy to use, fast and functional audio editor. It is the ideal software for people who need to edit and analyze audio files without complications:
http://www.ocenaudio.com.br/

Geary is a lightweight email program designed around conversations and built for the GNOME desktop:
http://www.yorba.org/projects/geary/

Glances is a cross-platform curses-based monitoring tool:
http://nicolargo.github.io/glances/

Format Junkie is a Graphical User Interface application with lots of options, which can convert your media files to all the popular formats:
http://www.reddit.com/r/Ubuntu/comments/ya3u4/format_junkie_fully_featur...

ReText is a simple editor that reads your text with MarkDown or HTML markup and saves it as plain text, HTML or PDF:
http://sourceforge.net/projects/retext/

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